As a researcher in the sociology of education you are interested in the effect of different teaching methods (traditional lecture, innovative discussion, or computer assisted) on final exam scores (1-100 points).So you choose a sample of 20 students taught by each of the three teaching methods (n=60) and ask them what their final scores were.From this sample you obtain the following results.

Sums of Squares (SS)dfMean Squares (MS)

SSBetween305.23

SSWithin1427.32

________________________________________________

Total SS1732.55

12. What is your decision (at the ,05 level)?

Group of answer choices

Fail to reject the null hypothesis

or

Reject the null hypothesis